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Cisco Certified Design Expert Practical Sample Questions:

1. Which option is a benefit of using N-Port Virtualization?

A) allows trunking to the upstream switch
B) reduces latency when using local switching on Fibre Channel ports
C) does not need to configure the upstream switches
D) reduces the amount of domain IDs that are used in the fabric
E) does not need to create zoning

2. Refer to the exhibit.

This network is running IS-IS as the single routing protocol and the LSP and SPF timers are aggressively configured so the network converges in subsecond. The customer reports that router B had a memory crash and reloaded. Which resulted in some packets from the application being lost. The application servers are behind router G and the end users are behind router H, which design change should be made to prevent this packet-loss problem from reoccurring?

A) Deploy all links as point-to-point
B) Enable the advertisement of the overload bit for a specific amount of time after reload on router B
C) Optimize the LSP/SPF timers to send LSPs immediately after a topology change
D) Redesign the network as a flat level 2
E) Use asymmetric carrier delay timer

3. You are solving a design failure on a massive Hadoop cluster network that has an application with TCP incast behavior (also known as TCP Throughput collapse) affecting its many-to-one communications with packet loss at the last-hop network device. Which metric must be measured to ensure that the network provides the best performance for this application?

A) Buffer utilization
B) Bandwidth utilization
C) Jitter values
D) Availability

4. A new video multicast application is deployed in the network. The application team wants to use the 239.0.0.1 multicast group to stream the video to users. They want to know if this choice will impact the existing multicast design. What impact will their choice have on the existing multicast design?

A) The multicast application sends too many packets into the network and the network infrastructure drops packets.
B) Because 239.0.0.1 is a private multicast range, the rendezvous point has to send out constant group updates that will have to be processed by the CPU and hosts.
C) Because 239.0.0.1 is a private multicast range, a flood of PIM packets that have to be processed by the CPU and hosts will be sent by the routers in the network.
D) The 239.0.0.1 group address maps to a system MAC address, and all multicast traffic will have to be sent to the CPU and flooded out all ports.

5. Which two options are design considerations when introducing FCoE into an existing network? (Choose two)

A) The FCoE QoS markings may overlap with call signaling QoS markings
B) Optical cabling is needed to transmit FCoE traffic between a server and its directly connected Ethernet switch
C) Twinaxial cabling can be used to transmit FCoE traffic between a server and its directly connected Ethernet switch, if it is less than 10 meters
D) The existing network must support a MTU of 3280 bytes
E) All the servers in the data center must be retrofitted with converged Network Adapters

Solutions: